Which of the Following Is a Hypothesis Generated by Biologists

question 96

Multiple Choice

Which of the following is a hypothesis generated by biologists to explain species richness gradients?

• A) Greater competition in the tropics has led to narrower niches and thus more species in the tropics than elsewhere.
• B) The lack of mutualisms in the higher latitudes limits the number of species in high latitude communities.
• C) Intense predation in the polar regions limits the number of species that can live there.
• D) Both a and b
• E) Both b and c

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Definitions:

Erythroblastosis Fetalis

A potentially fatal condition in newborns due to incompatibility between maternal and fetal blood types.

RhoGAM

A medication used to prevent Rh incompatibility issues in pregnancies by stopping the mother's immune system from attacking the baby's red blood cells.

Rh-negative

A blood type classification indicating the absence of Rh factor, a protein on the surface of red blood cells.

Hemoglobin

Hemoglobin is a protein in red blood cells responsible for transporting oxygen from the lungs to the rest of the body and returning carbon dioxide back to the lungs.